Identify Device (Ech); Table 4-7 Identify Device Command - Western Digital WD15NPVX Technical Reference Manual

WD Green MB500M-6Gb
4.3

Identify Device (ECh)

The Identify Device command transfers 512 bytes of data that specify the drive's parameters. Table 4-7
lists the parameters read by the host.
Table 4-7. Identify Device Command
WORD
0
1
2
3
4-5
6
7-8
9
10-19
20-21
22
23-26
27-46
47
48
49
50
51-52
2679-771422-A00
FIELD DESCRIPTION
General Configuration
Obsolete
Specific Configuration
Obsolete
Retired
Obsolete
Reserved for assignment by the CompactFlash™ Association
Retired
Serial Number (ATA String)
Retired
Obsolete
Firmware Revision (ATA String)
Model Numbers (ATA String)
READ/WRITE MULTIPLE support
Bit 15-8: 80h
Bit 7-0: 00h: Reserved
01h-FFh = Maximum number of logical sectors that shall be
transferred per DRQ data block on READ/WRITE
MULTIPLE commands
Trusted Computing feature set options
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bit 13-1: Reserved for the Trusted Computing Group
Bit 0: If set, Trusted Computing feature set is supported
Capabilities
Bit 15-14: Reserved for the IDENTIFY PACKET DEVICE
command.
Bit 13: If set, Standby timer values as specified in this
standard are supported.
0 = Standby timer values shall be managed by the device
Bit 12: Reserved for the IDENTIFY PACKET DEVICE
command
Bit 11: If set, IORDY supported
Bit 10: If set, IORDY may be disabled
Bit 9: If set, LBA supported
Bit 8: If set, DMA supported
Bit 7-2: Reserved
Bit 1: Current Long Physical Alignment Setting
Capabilities
Bit 15: Shall be cleared to zero.
Bit 14: Shall be set to one.
Bit 13-2: Reserved.
Bit 1: Obsolete
Bit 0: Shall be set to one to indicate a device specific
Standby timer value minimum
Obsolete
RELEASED 5/2/13 (WD CONFIDENTIAL)
AT Command Set
VALUE
427Ah
XXXX
XXXX
XXXX
0
XXXX
0
0
WDnnnnnnnn
XXXX
0
nnnn
"WDC WD20NPVX-nnnnnnn"
"WDC WD15NPVX-nnnnnnn"
8010h
4000h
2F00h
4001h
0
27